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Necromys

Osteichthyes - Rodentia - Cricetidae

Taxonomy
Necromys was named by Ameghino (1889). It is extant. Its type is Necromys conifer.

It was assigned to Hesperomyidae by Ameghino (1889); and to Akodontini by D'Elía (2003).

Synonyms
Synonymy list
YearName and author
1889Necromys Ameghino p. 118
1916Bolomys Thomas p. 339
1967Cabreramys Massoia and Fornes
1997Bolomys McKenna and Bell
2003Necromys D'Elía p. 315
2006Bolomys Salles et al. p. 9

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentiaBowdich 1821
familyCricetidaeFischer von Waldheim 1817
subfamilySigmodontinaeWagner 1843
—Oryzomyalia
tribeAkodontiniVorontzov 1959
genusNecromys

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. Necromys Ameghino 1889
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Necromys benefactus Thomas 1919
†Necromys bonapartei Reig 1978
†Necromys conifer Ameghino 1889
Necromys lactens Thomas 1918
Necromys obscurus Hershkovitz 1962
Necromys obscurus scagliarum Galliari and Pardiñas 2000
Invalid names: Bolomys Thomas 1916 [synonym]
Diagnosis
ReferenceDiagnosis
O. Thomas 1916 (Bolomys)Skull stout and strongly built, with broad square-edged interorbital region. Zygomatic plate projected forward. Palatal foramina narrowed behind, continued well between the molars. Bullae very large. First molar apparently without anterior notch, but wuite young specimens are not available. By its large bullae and long claws Bolomys resembles Chroeomys, but the general facies and the structure of the rest of the skull seem to indicate a nearer relationship to Akodon
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: viviparoussubc
Created: 2005-08-26 14:04:46
Modified: 2005-08-26 16:04:46
Source: o = order, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Carroll 1988, Nowak 1999, Hendy et al. 2009, Lillegraven 1979

Age range

Maximum range based only on fossils: base of the Messinian to the top of the Holocene or 7.24600 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 5.333 Ma

Collections (14 total)


Time interval Ma Country or state Original ID and collection number
Messinian7.246 - 5.333Argentina (La Pampa) N. bonapartei (141939)
Montehermosan5.0 - 3.8Argentina (Buenos Aires) N. bonapartei (152062 152081 198863)
Chapadmalalan3.8 - 3.0Argentina (Buenos Aires) N. bonapartei (199156)
Pleistocene - Holocene2.58 - 0.0Brazil (Mato Grosso do Sul) Bolomys sp. (92813)
Pleistocene - Holocene2.58 - 0.0Brazil (Rio Grande do Sul) Bolomys lasiurus (211820 211822)
Rancholabrean0.21 - 0.014Mexico (Sonora) N. lactens (213027)
Late/Upper Pleistocene0.129 - 0.0117Brazil (Goiás) Bolomys lasiurus (211821)
Late/Upper Pleistocene0.129 - 0.0117Argentina (Tucuman) N. lactens (141182)
Holocene0.0117 - 0.0Brazil (Rio Grande do Sul) N. lasiurus (211634)
Holocene0.0117 - 0.0Bolivia N. lactens (71324)
Holocene0.0117 - 0.0Argentina (Buenos Aires) Cabreramys obscurus (145810)